An omnidirectional electromagnetic absorber made of metamaterials

@article{Cheng2010AnOE,
  title={An omnidirectional electromagnetic absorber made of metamaterials},
  author={Q. Cheng and T. Cui and W. Jiang and B. Cai},
  journal={New Journal of Physics},
  year={2010},
  volume={12},
  pages={063006}
}
In a recent theoretical work by Narimanov and Kildishev (2009 Appl. Phys. Lett. 95 041106) an optical omnidirectional light absorber based on metamaterials was proposed, in which theoretical analysis and numerical simulations showed that all optical waves hitting the absorber are trapped and absorbed. Here we report the first experimental demonstration of an omnidirectional electromagnetic absorber in the microwave frequency. The proposed device is composed of non-resonant and resonant… Expand

Paper Mentions

News Article
Electromagnetic Absorbers Based on Metamaterial and Plasmonic Devices
1 Abstract—The objective of this paper is to focus on reviewing the recent advances in research on metamaterial and plasmonic absorbers. Metamaterials provide excellent flexibility, robustness andExpand
Broadband Microwave Absorption by Logarithmic Spiral Metasurface
TLDR
A simple metasurface microwave absorber is proposed that has one metal-backed logarithmic spiral resonator as the unit cell and can absorb >95% of normally incident microwave energy within the frequency range of 6  GHz–37 GHz as a result of the scale invariant geometry and the Fabry-Perot-type resonances of the resonator. Expand
Superabsorbing metamaterial wormhole: Physical modeling and wave interaction effects
Conjugate-impedance matched superabsorbers are metamaterial bodies whose effective absorption cross section greatly exceeds their physical dimension. Such objects are able to receive radiation whenExpand
Metamaterial-based perfect absorbers
Metamaterials are artificially-engineered materials, possessing properties which are not readily observable in materials existing in nature. Since they show very novel properties such as left-handedExpand
Experimental and simulated study of a composite structure metamaterial absorber
Abstract In this paper, a high performance metamaterial absorber is designed and experimental studied. Measured results indicate that a perfect absorption band and a short-wavelength absorption peakExpand
Radiation of planar electromagnetic waves by a line source in anisotropic metamaterials
We show experimentally that a line source in an anisotropic metamaterial directly radiates planar electromagnetic waves instead of cylindrical waves, when one component of the permeability tensorExpand
Electromagnetic field attractor made of gradient index metamaterials.
TLDR
A device that is designed with varying permittivity ε(r) such that an electromagnetic wave in the K-band of the microwave regime entering it will bend inward towards the core so that approximately 80% of the wave still manages to reach the core of the device and gets trapped and absorbed. Expand
Conformal dual-band near-perfectly absorbing mid-infrared metamaterial coating.
TLDR
This paper demonstrates a conformal metamaterial absorber with a narrow band, polarization-independent absorptivity of >90% over a wide ±50° angular range centered at mid-infrared wavelengths of 3.3 and 3.9 μm, making it attractive for advanced coatings that suppress the infrared reflection from the protected surface. Expand
Experimental study on a broadband omnidirectional electromagnetic absorber
A broadband omnidirectional electromagnetic absorber is constructed with traditional materials including silicon powder, polyethylene and a mixture of water and ethanol. Variation of the dielectricExpand
Ultra-light planar meta-absorber with wideband and full-polarization properties.
TLDR
An ultra-broadband and full-polarization planar metamaterial absorber with a three-layer composite structure, which exhibits multi-resonant and impedance matching properties by combining the ultra-light foams and indium tin oxide (ITO) films. Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 19 REFERENCES
An omnidirectional retroreflector based on the transmutation of dielectric singularities.
TLDR
An omnidirectional retroreflector is demonstrated, a device for faithfully reflecting images and for creating high visibility from all directions, that would normally require a dielectric singularity, an infinity in the refractive index in a real metamaterial. Expand
Spatial mapping of the internal and external electromagnetic fields of negative index metamaterials.
TLDR
From the measured mappings of the electric field, the interplay between the microstructure of the metamaterial lattice and the macroscopic averaged response is revealed and the mapped phase fronts within a meetingamaterial having a negative refractive index are consistent with a Macroscopic phase-in accordance with the effective medium predictions. Expand
An optical cloak made of dielectrics.
TLDR
The optical 'carpet' cloak is designed using quasi-conformal mapping to conceal an object that is placed under a curved reflecting surface by imitating the reflection of a flat surface and enables broadband and low-loss invisibility at a wavelength range of 1,400-1,800 nm. Expand
Optical cloaking with metamaterials
TLDR
This work presents the design of a non-magnetic cloak operating at optical frequencies, and the principle and structure of the proposed cylindrical cloak are analysed and the general recipe for the implementation of such a device is provided. Expand
‘Trapped rainbow’ storage of light in metamaterials
TLDR
It is demonstrated theoretically that an axially varying heterostructure with a metamaterial core of negative refractive index can be used to efficiently and coherently bring light to a complete standstill, and allows for high in-coupling efficiencies and broadband, room-temperature operation. Expand
Broadband Ground-Plane Cloak
TLDR
An experimental realization of a cloak design that conceals a perturbation on a flat conducting plane, under which an object can be hidden, and results indicate that this type of cloak should scale well toward optical wavelengths. Expand
Mimicking celestial mechanics in metamaterials
Einstein’s general theory of relativity establishes equality between matter–energy density and the curvature of spacetime. As a result, light and matter follow natural paths in the inherent spacetimeExpand
Metamaterial Electromagnetic Cloak at Microwave Frequencies
TLDR
This work describes here the first practical realization of a cloak of invisibility, constructed with the use of artificially structured metamaterials, designed for operation over a band of microwave frequencies. Expand
Electromagnetic wormholes and virtual magnetic monopoles from metamaterials.
TLDR
New configurations of electromagnetic material parameters, the electric permittivity epsilon and magnetic permeability micro, are described, which allow one to construct devices that function as invisible tunnels, which effectively change the topology of space vis-à-vis EM wave propagation. Expand
Determination of effective permittivity and permeability of metamaterials from reflection and transmission coefficients
We analyze the reflection and transmission coefficients calculated from transfer matrix simulations on finite lengths of electromagnetic metamaterials, to determine the effective permittivity ~«! andExpand
...
1
2
...